Technically the most "optimal" in damage (without meter) is
5b5c2c2b jbc jbc AT 4962 Damage, but you need to be so extremely close to enemies to do that.
If you like Nanaya's cross up/mix up games you will want to incorporate hard knock downs (2c and 214a) into your combos. This can be done through combos like
2b5c2c 214a 2590 Damage
2b5c 214b jump cancel j22 2c 214a 2731 Damage (near corner but not close enough to enemy for 214b to knock enemy up).
Also maybe I'm just a noob but why 22c if you get the superjump timing after 5bb, and learn to combo off that? Maybe I'm just to used to it so I don't do 22c and I should.
(All values are on V. Sion) Your values seem a bit lower than they should be when I tested them myself.
Also adding meter to your combos like 623c in corner can net some extra damage for 100 meter. Not always useful but if it was the difference between a killing blow, then it might be worth the investment.
And just putting this out there (corner) Blood Heat 5b5c2c2b 41236c = 6945 Damage